John O'Shea admits the time was right for him to leave Manchester United this summer.
The 30-year-old had been with United since 1998 but decided to join Sunderland in a joint deal with fellow defender Wes Brown.
Although O'Shea had been with the club his entire adult life, he was ready to move on from at Old Trafford and make a fresh start at the Stadium of Light.
"I wouldn't say it was a wrench, it was just one of those things," he said.
"In a footballer's career, you have to move on at some point.
"It was definitely a change because I had been at United for so long. Since I was 17, I was there.
"But it was 13 years and it was time for a change."
O'Shea made his Sunderland debut in Saturday's 0-0 draw at Swansea and is set to win his 71st cap for the Republic of Ireland in their crucial Euro 2012 qualifier against Slovakia on Friday night, which is live on Sky Sports HD3.